Overview | Package | Class | Tree | Deprecated | Index | Help
| Bouncy Castle Cryptography Library 1.85
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## org.bouncycastle.crypto.signers
Interface DSAEncoding

All Known Implementing Classes:
  PlainDSAEncoding, StandardDSAEncoding

public interface DSAEncoding

An interface for different encoding formats for DSA signatures.

Method Summary
`java.math.BigInteger[]` | `decode(java.math.BigInteger n, byte[] encoding)` Decode the (r, s) pair of a DSA signature.
`byte[]` | `encode(java.math.BigInteger n, java.math.BigInteger r, java.math.BigInteger s)` Encode the (r, s) pair of a DSA signature.

Method Detail

### decode

    public java.math.BigInteger[] decode(java.math.BigInteger n,
                                         byte[] encoding)
                                  throws java.io.IOException

  Decode the (r, s) pair of a DSA signature.

  Parameters:
    `n` - the order of the group that r, s belong to.
    `encoding` - an encoding of the (r, s) pair of a DSA signature.
  Returns:
    the (r, s) of a DSA signature, stored in an array of exactly two elements, r followed by s.
  Throws:
    `java.io.IOException`

### encode

    public byte[] encode(java.math.BigInteger n,
                         java.math.BigInteger r,
                         java.math.BigInteger s)
                  throws java.io.IOException

  Encode the (r, s) pair of a DSA signature.

  Parameters:
    `n` - the order of the group that r, s belong to.
    `r` - the r value of a DSA signature.
    `s` - the s value of a DSA signature.
  Returns:
    an encoding of the DSA signature given by the provided (r, s) pair.
  Throws:
    `java.io.IOException`

Overview | Package | Class | Tree | Deprecated | Index | Help
| Bouncy Castle Cryptography Library 1.85
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD